by Kastro
Paper/Archive/CVE-2026-8398

CVE-2026-8398

AVB Disc Soft DAEMON Tools Lite — Daemon Tools Lite Embedded Malicious Code Vulnerability

KEV · due 30 MayEPSS 1%public exploitSSVC actCVSS 9.8
critical.is priorityof 100
94
CVSS 9.8 (CNA)9.8 / 10 × 3029.4In CISA KEV+3030.0EPSS percentile 73.4.734 × 2014.7Exploit: SSVC active+1010.0SSVC exploitation: active+1010.0
Description · from the CVE record

A supply chain attack compromised the official installation packages of DAEMON Tools Lite (Windows versions 12.5.0.2421 through 12.5.0.2434), distributed from the legitimate website daemon-tools.cc between approximately April 8, 2026, and May 5, 2026. Attackers gained unauthorized access to the vendor's (AVB Disc Soft) build or distribution infrastructure and trojanized three binaries: DTHelper.exe, DiscSoftBusServiceLite.exe, and DTShellHlp.exe. These files were digitally signed with the legitimate AVB Disc Soft code-signing certificate, allowing the malicious installers to appear trustworthy and bypass signature-based detection.

Affected

ProductAffectedFixed inSource
DAEMON Tools Lite12.5.0.2421 – < 2.6.0.*2.6.0.*CNA

Scores by source

Kaspersky (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Kaspersky (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CISA ADPSSVCExploitation: active · Automatable: yes · Technical impact: total

References

writeupsecurelist.com/tr/daemon-tools-backdoor/119654advisoryblog.daemon-tools.cc/post/security-incidentrefcisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-8398kevcisa.gov/known-exploited-vulnerabilities-catalog